Comments on: NASA Modifies Launch Service Contract to Add Falcon 9 Rocket http://www.parabolicarc.com/2012/05/14/nasa-modifies-launch-service-contract-to-add-falcon-9-rocket/ Space Tourism ... and Much More Wed, 22 May 2013 02:10:00 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Marcus Zottl http://www.parabolicarc.com/2012/05/14/nasa-modifies-launch-service-contract-to-add-falcon-9-rocket/comment-page-1/#comment-44256 Marcus Zottl Mon, 21 May 2012 20:14:26 +0000 http://www.parabolicarc.com/?p=38627#comment-44256 Just found this interview with Elon Musk.
http://www.spaceflightnow.com/falcon9/003/120518musk/

According to this, F9 1.1 uses the Merlin 1D engines and is a whopping 50% longer then the current one.

]]> By: mr. mark http://www.parabolicarc.com/2012/05/14/nasa-modifies-launch-service-contract-to-add-falcon-9-rocket/comment-page-1/#comment-44057 mr. mark Tue, 15 May 2012 14:20:21 +0000 http://www.parabolicarc.com/?p=38627#comment-44057 9v1.1 is a single stretched Falcon Heavy central core along with a possible new Merlin 1d engine configuration.

]]> By: Marcus Zottl http://www.parabolicarc.com/2012/05/14/nasa-modifies-launch-service-contract-to-add-falcon-9-rocket/comment-page-1/#comment-44050 Marcus Zottl Tue, 15 May 2012 09:16:24 +0000 http://www.parabolicarc.com/?p=38627#comment-44050 I wonder what this Falcon 9 v1.1 is?
Just the latest evolution of the Merlin (D? E?) or is there more to it?

The SpaceX F9 user guide still lists the Falcon 9 with Merlin 1C engines, but that is from 2009 and on the webpage the thrust of the Merlin on F9 is listed as 125,000 lbf at sea level (no mention which version of Merlin) but on the F1 page the Merlin 1C is listed with only 115,000 lbf at sea level and on the F9H page, if you do the math, the thrust is ~140,000 lbf per engine.

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